Code-Based Prototypes, Not Just Mockups
Get a functional, interactive prototype that bridges the gap between design and development. Test real user flows, responsive behaviors, and edge cases before committing to full development.
Beyond Mockups and Wireframes
Stop waiting weeks for static designs that don't show how your product will actually work.
Test real interactions, responsive behaviors, and user flows. Identify potential issues that static designs can't reveal.
No more waiting weeks for development. Get your initial prototype in just 48 hours, with the same quick turnaround on revisions.
Test with real users and get stakeholder buy-in before investing thousands in full development.
How It Works
From concept to interactive prototype in days, not weeks. Test real functionality and save development time.
- Identify core functionality to prototype
- Define user flows and interactions
- Understand your brand guidelines
- Interactive, working prototype
- Focus on functionality over design
- Hosted link you can share
- Unlimited revision requests
- Collect user feedback
- Refine until you're satisfied
Test Before You Invest
Get stakeholder buy-in and user feedback with a functional prototype before committing to full development.
Beyond Static Designs
Not just mockups or wireframes - real, interactive prototypes built with code.
Speed to Feedback
Gather user insights weeks earlier than traditional development processes.
Focus on Core Functionality
Validate the critical features and user flows without getting distracted by visual details.
Flexible Subscription
Cancel anytime. Only pay for what you need.
Investor Pitch Ready
User Testing
Development Readiness
Projects
Here are some example prototypes showing what can be built in 48 hours.
Hi, I'm Harshil Siyani
I'm a full-stack developer who bridges the gap between design and functional products, helping you avoid costly development pitfalls.
Having spent years in enterprise development, I've witnessed countless projects stumble not from bad design, but from the limitations of static mockups. UI designs, while beautiful, often miss critical interaction patterns, responsive breakpoints, and user flow gaps that only become apparent once development begins—leading to expensive revisions and delays.
That's why I created RapidPrototype. Instead of just static designs, you get a fully interactive, code-based prototype that reveals real-world usability challenges before full development begins. You can test actual user flows, see how your app responds across all screen sizes, and identify edge cases early. Best of all, since it's built with production-grade code, components can be reused in your final product—saving valuable development time.
Don't let your innovative idea get lost in translation between design and development. Get a working prototype that brings clarity and confidence to your product vision.
More about me
Harshil Siyani
Full-Stack Developer
Simple, Transparent Pricing
Validate your concept and save development costs with a production-ready prototype.
- Initial prototype delivered in 48 hours
- Unlimited revision requests
- 48-hour turnaround on revisions
- One active request at a time
- Shared project management portal
- Code-based, functional prototypes
- Cancel anytime
- Production-ready code you can reuse
Frequently Asked Questions
Everything you need to know about RapidPrototype.
Within 48 hours of our initial consultation, you'll receive a functional, code-based prototype of your concept. This includes the core user flows and functionality you've specified, with a basic UI aligned to your brand. The prototype will be accessible via a URL that you can share with stakeholders or use for user testing.
Traditional approaches often reveal issues only after development begins - when changes are most expensive. With a code-based prototype, you can test real interactions, responsive behaviors, and user flows immediately. Plus, since it's built with production-ready code, components can be reused in the final product, accelerating development and maintaining consistency.
You can request as many changes as you need to the prototype during your subscription period. There's no limit to the number of revisions, but I work on one request at a time. Each revision is delivered within 48 business hours. This allows for rapid iteration based on feedback or new ideas.
Yes, you can Cancel your subscription at any time. If you cancel, you'll have access until the end of your current billing period. There are no long-term contracts or commitments.
Once you've validated your concept, I can either continue with full development of your MVP or provide you with all the code and specifications for your team. The prototype can serve as the foundation for your production build, potentially saving weeks of development time. We'll discuss your specific needs and the best path forward during our consultation.
While prototypes are built with production-grade code, they focus on core functionality rather than scalability or complex backend operations. This allows for rapid development while still providing a realistic user experience. If you need specific technical features, we can discuss them during the consultation.
Ready to prototype your idea?
Let's turn your concept into a functional prototype in just 48 hours.
What happens next?
- 1
Schedule a 30-minute consultation to discuss your project
- 2
Receive your first prototype within 48 hours
- 3
Iterate and refine based on your feedback